Upper Santa Ana Integrated Regional Water Management Plan

Upper Santa Ana River Integrated Regional Water Management Plan

The Integrated Regional Water Management Plan for the Upper Santa Ana River (IRWMP) was adopted at a public hearing held on December 6, 2007 through the adoption of pdf
Resolution No. 435
(345 KB). The District and partner agencies are in the process of updating the IRWMP; the final Upper Santa Ana IRWMP documents can be found below: